Troubleshooting An External Keyboard Or External Keypad - Dell Latitude XPiCD Reference Manual

1. Reboot the computer by pressing
< >< ><
CTRL ALT DEL
ROM drive access indicator blink during the boot
routine, and does the drive boot the operating
system?
Yes. If a message appears on the display, see
Table 3-2 for an explanation of the message and pos-
sible corrective actions. Then go to step 6.
No. Continue to step 2.
2. Insert your operating system diskette into drive
A, and reboot the computer.
3. Type c: and press <
press < >. Does MS-DOS display the root
ENTER
directory contents for drive C?
Yes. Go to step 5.
No. Continue to step 4.
4. If your hard-disk drive has more than one logical
drive, type d: and press <
and press < >. Does MS-DOS display the root
ENTER
directory contents for drive D?
Yes. Continue to step 5.
No. You may have a corrupted boot sector or file
allocation table (FAT) on drive C. Go to step 8.
5. Rename your autoexec.bat and config.sys files,
remove the operating system diskette from drive A,
and reboot the computer. Does the operating system
load now?
Yes. You have an error in your autoexec.bat or con-
fig.sys file. Use a text editor to examine the contents
of these files and locate the error. For information on
the correct syntax for commands in these files, see
the documentation that accompanied your operating
system.
No. Continue to step 6.
6. Insert your diagnostics diskette into drive A, and
reboot the computer. Then run the Hard-Disk
Drive Test Group. Does your drive pass all the
tests?
Yes. Continue to step 7.
No. Go to step 8.
3-24 Dell Latitude XPi CD Reference and Troubleshooting Guide
>. Does the hard-disk drive/CD-
>. Then type dir and
ENTER
>. Then type dir
ENTER
7. Replace your diagnostics diskette with the operat-
ing system diskette, and reboot the computer.
Does the operating system load now?
Yes. The hard-disk drive may contain a corrupted
operating system or it may have bad sectors. Re-
install the operating system as described in the
documentation that accompanied your operating sys-
tem. If reinstalling the operating system does not
correct the problem, continue to step 8.
No. Continue to step 8.
8. Call Dell for technical assistance.
See Chapter 5, "Getting Help," for instructions.
Troubleshooting an External Keyboard
or External Keypad
During POST, the computer checks to see if an external
keyboard or keypad is connected. If an external keyboard
is connected, the computer recognizes both the built-in
and the external keyboards. If an external keypad is con-
nected, the computer recognizes the external keypad and
the built-in keyboard, but does not recognize the embed-
ded numeric keypad. If an attached external keyboard or
keypad does not work when you boot the computer, make a
copy of the Diagnostics Checklist found in Chapter 5 and fill
it out as you complete the following procedure.
NOTES: If you use a PS/2 "Y" adapter to connect an
external device to the computer's PS/2 connector, the
device does not work.
Before you begin this procedure, make sure that the
option in the System Setup program is set to
TEM SWITCH
. For instructions, see "Using the System Setup Pro-
ON/OFF
gram" in Chapter 2.
1. Make sure the cable from the external keyboard
or keypad is firmly connected to the external key-
board/keypad/mouse connector on the back of the
computer. (See "Checking Connections" found
earlier in this chapter.)
2. If you are using a keyboard with various switch
settings, make sure the switch is set to "PS/2,"
"Enhanced XT/AT," or "PC/AT."
The switch settings are usually on the bottom of the
keyboard, sometimes behind a panel tab.
SYS-